Bearing-dressing device



C. S. OVERMAN.

BEARING DRESSING DEVICE. APPLICATION FILED AUG. 14, I920.

1,392,208. Patentedsept. 27, 1921.

2 SHEETS-SHEET n.

PATENT OFFICE.

UNITED STATES CHARLES S. OVERMAN, OF DETEQI'I, MICHIGAN.

BEARING-BRESSING DEVICE.

Application filed August 14, 1920. Serial Nos miijdo.

To all whom it may concern Be it known that I, Quarries S. OVER- IvIAN,'2L citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented new and useful Improvements in Bearing-Dressing Devices, of which the following is a specification.

This invention relates to a tool for filing the bearings of internal combustion engines and the like, the principal object of the invention being to provide means whereby both edges of each half of the crank case bearings may be filed down flush with the walls and bridges of the case.

Another object of the invention is to make the device so that it may be drawn back and forth over the bearings in the same manner as a jack plane is used.

This invention also consists in certain other features of construction and in the combination and arrangement; of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a plan view of the device.

Fig. 2 is a side view.

Fig. 3 is a section on line 8-3 of Fig. 1.

Fig. 4 is a longitudinal section on line 44 of Fig. 3.

Fig. 5 is a sectional view through a part of the crank case showing my invention in use.

In these views 1 indicates a frame which consists of the two cross pieces 2 and the longitudinally extending piece 3 which connects the two cross pieces together. This piece 3 has an upwardly extending part 4: at each end thereof with a fin 5 connecting the two parts l together. A pair of cross strips or shoes 6 are secured to the cross pieces 2 and these shoes are of greater width than the cross piece so as to form shoulders 7 upon which the ends of the files 8 rest. One of these files is placed on each side of the piece 3 and each file is of square shape in cross section. The files are held in place by means of the clamping plates 9 which are secured to the cross pieces by means of the bolts 10 and the wing nuts 11. A pair guiding strips 12 are secured to the ends T he cross pieces 2 by the screws 13 and -ese guides rest uponv the extended ends of 1c shoes. These guiding strips are of much reater length than the rest of the device nd their extended ends are connected toether by the cross piece 14.

The files are spaced apart so as to engage the two edges of the half of the bearing and sliding the device back and forth over me bearing the files will be caused to cut down the edges flush with the seating in the crank case.

1 It will of course be understood that the device must be made of various sizes to fit the different makes of automobiles and en gmes.

My invention will file both sides of the hearing at once so that the work is done more quickly and more accurately than by the old way of filing and it will leave all bearings true and flush with the walls and bridges of the crank case.

The guiding strips 12 are used for locatmg the device at the proper place on the crank case. They also act to keep the files in proper line so that they will at all times be cutting the surplus stock of the bearings. The extension of the strips rests upon the next bridge or wall of the case for keeping the device levelso that all bearings are true and level. These strips also act as depth gages so that when the bearings are filed down to the proper level they rest upon the bridges and wall and the bearing cannot be filed too low, leaving them ready for assembling.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What I claim is 1. A device of the class described comprising a frame consisting of a pair of cross pieces and a longitudinally extending connecting piece, a file on each side of said connecting piece and means for clamping the files to the cross pieces.

2. A. device of the class described comprising a frame consisting of a pair of cross pieces and a longitudinally extending connecting piece, a file on each side of the con necting piece, means for clamping the files pieces, a file on each side'of the connecting to the cross pieces and guide pieces connectpiece and extending parallel therewith, said 10 ed with the sides of the frame. files having their edges resting upon the 3. A device of the class described comshoes, means for clamping the files 1n place prising a frame consisting of a pair of cross and guiding strips connected with the ends pieces and a longitudinally extending conof the cross pieces. necting piece, handles on the frame, shoes In testimony whereof I afiix my signature. 15 connected with the bottoms of the cross CHARLES S. OVERMAN. 

